When equipped with Thanos Greatsword-AD:
Increases damage of Wind Cutter and Servant Weapon by 25%.

For each 2 Refine Levels of equipped Weapon:
Increases Melee Physical Damage by 6%.
_______________________
When equipped with Thanos Axe-AD:
Increases damage of Axe Tornado and Axe Stomp by 25%.

For each 2 Refine Levels of equipped Weapon:
Increases damage of Axe Boomerang by 12%.
_______________________
When equipped with Thanos Spear-AD:
Increases damage of Hesperus Lit and Overslash by 25%.

For each 2 Refine Levels of equipped Weapon:
Increases damage of Overbrand by 12%.
_______________________
[Bonus by Grade of Headgear]
[Grade D]: POW +3
[Grade C]: P.ATK +3